Multi-fiber push-rau(MPO) connectorstau dhau los ua qhov tseem ceeb hauv kev tsim kho vaj tse nyob hauv cov chaw niaj hnub datacenter ib puag ncig, ua rau siab -kev sib txuas kho qhov muag pom kev sib tshuam thoob plaws 40G, 100G, 400G, thiab tawm 800G kis tau tus mob architectures. Kev xaiv ntawm MPO connector configurations tsim nyog-encompassing fiber ntau suav, polarity methodology, kawg-face geometry, thiab form factor- cuam tshuam ncaj qha rau kev txuas nyiaj txiag kev ua tau zoo, scalability pathways, thiab ua hauj lwm txij nkawm overhead nyob rau hauv cov txheej txheem cabling deployments.
Lub hauv paus tsis muaj leej twg xav piav ob zaug
Nov yog qhov hais txog MPO connectors uas mus ncig ua si rau tib neeg: cov lus hais yog kev ntxhov siab. MPO sawv cev rau ntau-fiber push-on, uas piav qhia txog cov qauv sib txuas sib txuas uas tau teev tseg hauv IEC 61754-7. MTP yog US Conec's trademarked version-xav tias nws zoo li Kleenex piv rau cov ntaub so ntswg. Lawv yog cov neeg kho tshuab hloov pauv tau, tab sis MTP cov khoom sib txuas siv cov khoom siv nruj dua, cov hlau pin clamps tsis siv cov yas, thiab muab cov vaj tsev ua haujlwm.
Feem ntau cov datacenter folks siv cov ntsiab lus sib hloov. Technically tsis ncaj ncees lawm, xyaum zoo.
Cov suav fiber ntau muaj khiav lub gamut: 8, 12, 16, 24, 32, txawm 48- fiber ntau variants muaj rau cov ntawv tshwj xeeb. Koj yuav tau ntsib dab tsi hauv qhov chaw tsim khoom? Feem ntau 8-fiber thiab 12-fiber rau QSFP transceiver ports, 24-fiber rau high-density duplex tis, thiab 16-fiber configurations tau traction nrog newer 400G SR8 modules.
Poj niam txiv neej Matters (Ntau dua li koj xav)
Txhua MPO connector yog txiv neej (nrog tus pins qhia) lossis poj niam (tsis muaj). Qhov no tsis yog qhov kev txiav txim siab - cov pins lub cev ua kom cov fiber ntau kawg - ntsej muag thaum sib tw. Tau qhov no tsis yog lawm thiab koj tab tom saib qhov tsis yog - kev sib txuas ua haujlwm lossis cov khoom puas.
Txoj cai yog yooj yim tab sis feem ntau ua txhaum: transceiver interfaces yog txiv neej, yog li koj thaj cords txuas rau lawv yuav tsum yog poj niam. Lub cev cables feem ntau khiav txiv neej- mus rau- txiv neej, mating los ntawm poj niam- mus rau - poj niam adapters ntawm thaj vaj huam sib luag.
Kuv tau pom cov kws tshaj lij yuam ob tus txiv neej txuas ua ke los ntawm lub adapter tsis sib haum. Cov lus qhia pins khoov, lub ferrules misalign, thiab mam li nco dheev koj tab tom piav qhia txog kev tswj hwm vim li cas qhov kev poob ntawm qhov txuas ntawd dhia ntawm 0.3dB mus rau qhov siv tsis tau.
Polarity: Qhov project mus rau Tuag
Nug ib tus neeg cog lus cabling dab tsi ua rau lawv nyob hmo ntuj thiab polarity yuav ua rau cov npe. Nyob rau hauv duplex fiber systems, koj xav tau kev xa cov teeb liab kom txog thaum tau txais cov chaw nres nkoj thiab rov ua dua. Nrog ib leeg -fiber LC connectors, qhov no yog ncaj nraim. Nrog 12-fiber MPO arrays nqa cov kev sib txuas optic? Nws yuav nyuaj sai.
TIA-568 txhais peb txoj kev polarity:
Hom A (ncaj-los ntawm): Fiber txoj hauj lwm 1 txuas mus rau txoj hauj lwm 1 ntawm qhov kawg. Lub connector tseem ceeb flips orientation-key-up on one end, key-down on the other. Koj xav tau cov kab sib xyaw ua ke ntawm cov ntsiab lus txiav kom ua tiav Tx / Rx kev sib raug zoo.
Hom B (rov qab): Ob qhov txuas txuas yog qhov tseem ceeb-nce, tsim kom muaj qhov ua tiav fiber ntau thim rov qab- txoj hauj lwm 1 tuaj txog ntawm txoj hauj lwm 12. Qhov no yog qhov mus - xaiv rau cov transceiver ncaj qha- mus rau -transceiver parallel optic txuas. SR4, DR4, DR{10}} daim ntawv thov yeej xav tau nws.
Hom C (pair -flipped): Fibers sib pauv nyob rau hauv cov khub uas nyob ib sab (1↔2, 3↔4, thiab lwm yam). Ua hauj lwm rau duplex breakout scenarios tab sis tsim mob taub hau rau parallel optics. Ua siab ncaj, Kuv tsis tshua pom hom C hauv kev xa tawm tshiab ntxiv lawm.
Qhov yuam kev txhua tus ua: sib xyaw hom polarity mid-channel. Koj qhov txuas 40G QSFP yuav tsis tsim, koj yuav siv sijhawm peb teev kuaj cov fiber ntau ib leeg, thiab thaum kawg pom ib tus neeg tuav hom A thaj qaum uas Hom B tau teev tseg.
Xaiv ib txoj kev. Document nws obsessively. Sau txhua yam.
Fiber suav thiab Base-8 vs Base-12 Debate
Qhov kev sib cav no tau ua haujlwm tau ntau xyoo thiab tej zaum yuav tsis nres.
Base-12 lub tshuab tsim nyob ib puag ncig MPO-12 cov khoom sib txuas tau dhau los ua tus qauv vim tias cov ntawv thov kev sib txuas thaum ntxov siv 10-fiber kis tau tus mob (4x10G SR4 rau 40G Ethernet). Cov txheej txheem teeb tsa thaum lub sijhawm ntawd suav tias yog 12-fiber increments. Patch panels, cassettes, lub cev cables-tag nrho tsim nyob ib ncig ntawm kaum ob ntawm fibers.
Tom qab ntawd QSFP transceivers tuaj nrog siv tsuas yog 8 fibers (txoj hauj lwm 1-4 thiab 9-12, tawm hauv nruab nrab plaub tsaus). Dheev 33% ntawm koj lub peev xwm fiber ntau zaum tsis siv hauv txhua qhov kev sib txuas MPO-12. Qhov ntawd yog kim pov tseg ntawm nplai.
Base-8 architecture hais txog qhov no los ntawm kev tsim kho vaj tse nyob ib puag ncig MPO-8 connectors. Kev siv fiber ntau, tsis muaj pov tseg. Tab sis nws yog qhov tsawg dua qhov sib txuas thiab yuav tsum muaj cov kab sib txawv, cov khoom siv sib txawv, thiab cov kev teeb tsa sib cais dua li qhov kev xa tawm Base-12 uas twb muaj lawm.
Cov lus teb ncaj ncees? Nws nyob ntawm koj qhov chaw pib.
Greenfield datacenters nrog cov nplais huv si feem ntau xaiv Base -8 rau kev ua tau zoo. Brownfield cov chaw uas twb muaj lawm MPO-12 infrastructure ntsib kev txiav txim siab tsiv teb tsaws chaw. Hyperscalers qee zaum khiav hybrid ib puag ncig-Base-8 rau kev sib txuas ncaj qha transceiver, Base-12 rau cov qauv kev faib tawm-thiab tswj cov kev hloov pauv tsis yooj yim sab hauv.
MPO-24 muaj txoj hauv kev nruab nrab nrog qhov ntom ntom dua li ob qho kev xaiv. Nees nkaum plaub fibers txhawb nqa ob qho tib si 3 × 8 thiab 2 × 12 teeb tsa los ntawm kev hloov pauv cables, muab kev hloov pauv hloov pauv hloov pauv ntawm tus nqi ntawm kev tswj hwm polarity complex.
Xaus -Face Polish: Cov Lus Nug APC
Tau ntau xyoo, UPC (ultra lub cev tiv tauj) polish dominated multimode datacenter deployments. Lub tiaj tiaj- ntsej muag geometry ua haujlwm zoo rau NRZ kev hloov kho ntawm 10G thiab 25G nrawm.
Ces PAM4 tshwm sim.
Niaj hnub no 400G thiab 800G transceivers siv 100G-PAM4 signaling yog qhov tshwj xeeb tshaj yog rhiab heev rau rov qab-reflections. Plaub -theem modulation scheme squeezes teeb liab margins nruj txaus uas kho qhov muag rov los ntawm imperfect connector interfaces yuav qhia me ntsis yuam kev. Transceiver manufacturers teb los ntawm kev hais qhia APC (lub kaum sab xis tiv tauj lub cev) cuam tshuam - tias 8-degree lub ntsej muag polish diverts pom lub teeb rau hauv cladding es tsis yog rov qab mus rau lub laser.
CommScope, Corning, thiab lwm tus neeg muag khoom loj tam sim no muab APC MPO kev xaiv tshwj xeeb rau PAM4 multimode deployments. Cov kev taw qhia siv tau los ntawm NVIDIA thiab lwm tus: siv MPO-12 / APC lossis MPO-16 / APC rau 400G SR4 / SR8 kev sib txuas, tshwj xeeb ntawm kev tsim kho tshiab.
Ib qho kev ceeb toom tseem ceeb: APC thiab UPC kawg - ntsej muag tsis tuaj yeem ua khub. Cov geometry yog lub cev tsis sib xws. Brownfield qhov chaw tsiv mus rau 400G xav tau cov kab hluav taws xob sib txuas (APC ntawm sab transceiver, UPC rau cov txheej txheem uas twb muaj lawm) lossis yuav tsum tau rov hais dua cov ntu cuam tshuam.
Qhov no yog hom kev nthuav dav uas zoo li me me kom txog rau thaum koj sawv ntsug ntawm lub vaj huam sib luag nrog cov khoom sib txuas tsis sib xws ntawm 2 AM.
Cable Assembly Hom
Tsis yog txhua MPO cables ua haujlwm tib lub hom phiaj.
Jumper cables:
Cov hlua luv luv nrog MPO txuas ntawm ob qhov kawg. Siv rau kev sib txuas cov khoom siv ncaj qha-transceiver rau transceiver, lossis transceiver rau thaj vaj huam sib luag. Ib leeg- lub tsho tsim, nruj khoov vojvoog kam rau ua.
01
Cov kab mob:
Lub pob txha. High fiber ntau- suav cov rooj sib txoos (72, 144, 288 fibers) khiav ntawm thaj chaw faib khoom. Muab ob npaug rau- lub tsho loj siv rau kev tiv thaiv kev siv tshuab, feem ntau siv los ntawm cov tais kab thiab txoj hauv kev. Cov no yog koj qhov peev txheej ruaj khov.
02
Cov kab mob
(fanout/breakout): MPO ntawm ib kawg, ntau qhov sib txuas (LC, SC) ntawm lwm qhov. Qhov tseem ceeb rau kev txuas MPO caj qaum rau cov cuab yeej cuab tam 10G lossis muab rau ib qho - fiber ntau nkag tau ntawm cov ntsiab lus xa tawm. 12-fiber MPO rau 6 × LC duplex hlua txuas txuas txuas txuas mus rau lub ntiaj teb duplex.
03
Hloov cov kab:
Hloov ntawm fiber ntau suav configurations. MPO-24 rau 2 × MPO-12. MPO-24 rau 3 × MPO-8. Cov no ua kom yooj yim infrastructure tab sis ntxiv qhov poob thiab complexity. Siv me ntsis.
04
VSFF Yav Tom Ntej
Ntawm no yog qhov uas tau nthuav.
Ib txwm siv MPO connectors-txawm MPO-16 thiab MPO-24 variants-tseem raug txwv qhov ceev. Lub connector vaj tse yooj yim tsis tuaj yeem txo qis ntxiv thaum tswj tus qauv MT ferrule hneev taw.
Daim Ntawv Qhia Me Me (VSFF) cov khoom sib txuas siv ntau txoj hauv kev. Ob txoj kev tsim qauv:
SN -MT(Senko): Ua rau ntawm SN duplex daim ntawv zoo, siv ntsug fiber ntau stacking. Muaj nyob rau hauv 8-fiber thiab 16-fiber configurations. Kwv yees li 2.7 × qhov ceev ntawm tus qauv MPO.
MMC(Tebchaws Asmeskas Conec): Siv lub me me "TMT" ferrule uas yog ob -feem peb qhov siab thiab ib nrab ntawm qhov ntev ntawm tus qauv MT ferrules. Muaj nyob rau hauv 12, 16, thiab 24-fiber versions. Ua tiav kwv yees li 3 × MPO ntom.
Ob lub connectors tau txais traction nyob rau hauv hyperscale ib puag ncig, tshwj xeeb tshaj yog rau 800G xa mus thiab AI / ML GPU pawg qhov chaw khib los ntawm tus nqi hwm. Corning, CommScope, thiab lwm yam tam sim no muaj cov txheej txheem cabling ua nyob ib ncig ntawm MMC infrastructure.
Cov lej yog qhov yuam kev: 216 SN-MT connectors haum rau tib lub vaj huam sib luag qhov chaw raws li 80 tsoos MPO-16 connectors. Qhov ntawd yog 3,456 fibers piv rau 1,280 fibers ib RU.
Kev saws me nyuam tseem ntxov -theem rau kev lag luam datacenters. Kev tshuaj xyuas thiab tu cov cuab yeej yog tshiab dua, kev cob qhia kev teeb tsa tsis tshua muaj dav, thiab cov ecosystem ntawm cov khoom sib xws me dua li MPO platforms paub tab. Tab sis txoj hauv kev yog qhov tseeb -VSFF yuav muaj teeb meem rau siab - qhov xav tau ceev.
Tswv yim xaiv lub moj khaum
Txhob xav ntau dhau qhov no
Rau 40G / 100G QSFP parallel optics: MPO-12 lossis MPO-8, Hom B polarity, UPC polish. Qhov no yog cov khoom siv infrastructure ntawm lub sijhawm no.
Rau 400G SR4 / SR8 multimode: MPO-12/APC lossis MPO-16/APC, Hom B polarity. Txheeb xyuas qhov tshwj xeeb ntawm transceiver interface-ib txhia tseem siv UPC.
Rau cov txheej txheem duplex faib: MPO-24 Hom A trunk cables nrog modular cassettes muab txoj hauv kev yooj yim tshaj plaws los ntawm 10G txog 100G. Cov cassettes tswj polarity conversion.
Rau cov pawg AI/HPC tshiab: Ntsuam xyuas VSFF cov kev xaiv tiag tiag. Cov txiaj ntsig zoo sib xyaw ua ke thoob plaws kev xa tawm loj.
Rau brownfield tsiv teb tsaws: Document yam koj muaj ua ntej yuav khoom. Polarity tsis sib haum, APC / UPC incompatibilities, thiab Base-8 / Base-12 tsis sib haum xeeb yuav tshwm sim thaum hloov kho. Cov peev nyiaj rau hybrid cables thiab hloov pauv hloov pauv hloov pauv.
Kev Xeem Tseeb
Txhua qhov txuas MPO xav tau Tier 1 daim ntawv pov thawj ua ntej siv ntau lawm. Qhov ntawd txhais tau tias kev ntsuas qhov muag tsis pom nyob thoob plaws txhua tus khub fiber ntau, kev txheeb xyuas polarity, thiab cov ntaub ntawv txaus rau cov chaw tsim khoom ua raws li kev lees paub.
Kev ntsuam xyuas MPO yog qeeb dua duplex. Ib qho MPO-12 connector muaj kaum ob fiber ntau kawg-ntsej muag los tshuaj xyuas, ntxuav, thiab tshuaj xyuas-txhua qhov ua rau qhov tsis ua tiav. Kev kis kab mob ntawm ib qho fiber ntau tuaj yeem ua rau tag nrho qhov sib txuas ntawm qhov sib txuas.
Fluke Networks FI-3000 thiab cov cuab yeej tshuaj xyuas zoo sib xws muab kev txheeb xyuas kev hla / tsis ua raws li IEC cov qauv. Siv lawv. Kev soj ntsuam pom pom kev kis kab mob uas qhov kev sim poob yuav ploj mus txog thaum qhov txuas tsis ua haujlwm.
Thiab ntxuav txhua qhov txuas. Txhua lub sijhawm. Tus naj npawb ntawm cov khoom lag luam tawm mus rau cov hmoov av ntawm MPO ferrules yuav ua rau koj nyuaj siab.
Kaw Xav
MPO connector xaiv tsis yog glamorous engineering ua haujlwm. Nws yog cov kav dej hauv vaj tse- hom kev txiav txim siab uas zoo li tho txawv kom txog thaum nws txwv koj qhov kev hloov kho tshiab tsib xyoos tom qab lossis ua rau tsis sib xws uas yuav siv sij hawm ntau lub lis piam los kuaj xyuas.
Kev siv tshuab txuas ntxiv mus. APC multimode, VSFF daim ntawv yam tseem ceeb, 32-fiber thiab 48-fiber configurations rau tawm 1.6T daim ntawv thov-txoj kev qhia txuas ntxiv mus.
Ua rau yam koj xav tau niaj hnub no, tab sis cia koj tus kheej mus rau kev ua haujlwm. Sau koj cov txheej txheem polarity, ua qauv koj cov fiber ntau suav qhov ua tau, thiab pob nyiaj siv rau cov khoom siv tshuaj xyuas uas ua haujlwm tau zoo nrog koj hom connector.
Cov datacenters uas khiav tau zoo yog cov uas ib tug neeg ua qhov kev txiav txim siab tho txawv hauv vaj tse kom raug xyoo dhau los. Ua tus neeg ntawd.
